1 6 D O C U M E N T 1 9 J A N U A R Y 1 9 2 1 is on the right track in the manner of caring for these children. We check this against the result; the calm steadiness of both children’s emotional development, their firm sense of will, and the fine intellectual maturity toward which they are advancing. I believe this tranquil continuity is of greatest importance, and I would really fear seeing this continuity interrupted now; I do not believe that Albert could be removed from the Zurich preparatory school and thrown into an entirely new milieu, in a new school environment, without risking an important part of his emo- tional life, and cause his fine receptiveness to harden or develop in an undesirable way.[5] I think, if ever possible, he should finish preparatory school here, at least to avoid risk, if not harm. Little Tete’s health is not very stable; I have a feeling, though, that he has adjusted well to our climate now and you should only in the dir- est emergency conduct the experiment of removal into an entirely different air.[6] You must forgive my impositions into your affairs, but as a kind of watchman we must report to you,[7] while it is completely clear to us how difficult any reflection is, because of the money issue. My Berlin friends (Dr. Ernst Hoffmann)[8] told me: if I had children, they would have to stay as long as possible in Switzerland to be raised in the Swiss mentality which is so important for children. I particularly think highly of Dr. Hoffmann’s advice, because he is considered an important educator. We send you our most respectful greetings, with warm regards from your Zürchers. I happily confirm every one of my husband’s words and send you my wishes with the same cordial remembrances. Johanna Zürcher-Siebel. 18. To Friedrich Michael[1] Berlin, den 17. 1. 21 [Not selected for translation.] 19. From Arnold Berliner[1] Berlin W9, 23/24 Link St., 17 January 1921 Dear Mr. Einstein, The report by the Physikalische Zeitschrift about the [Bad] Nauheim discussion is so fragmentary and in places so garbled that, without attacking Debye,[2] one can describe it as worthless.[3] The fault also ought to be directed less at Debye than at Hirzel, who did not make the necessary space available.[4] In the interest of the